/*
* fragment_shader1.glsl
*
* Copyright © 2021 vetal .
*
* This file is part of OpenGL_VAO.
*
* OpenGL_VAO is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* OpenGL_VAO is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with OpenGL_VAO. If not, see <http ://www.gnu.org/licenses/>.
*/


#version 300 es
precision mediump float;
in vec3 pos;
out vec4 FragColor;

const int cycles = 6;

void main( void ) {

	vec2 uv = gl_FragCoord.xy/30.0;
  vec3 color = vec3(2.0, 1.0, 1.0);
  for(int i=0; i<cycles; i++) {
    color = pow(vec3(dot(sin(uv),pos.xy), dot(cos(uv),pos.xy), dot(atan(uv),pos.xy)), color);
  };
	FragColor = vec4(color,1.);

}
